Edge Group
Add one or more Edge Group subnodes to a Beam End Release node when you need to specify how beams are connected at a joint. All beams which are selected in an edge group will be fully connected at the joint. Each group of edges will be free to move relative to any other edge group in the degrees of freedom selected in the parent Beam End Release node.
A certain edge can only be part of one edge group. A selection in a later edge group will override a selection of the same edge in a previous group.
Location in User Interface
Context Menus
Ribbon
Physics tab with Beam End Release selected: